Design of exploration and minerals-data-collection programs in developing areas

This paper considers the practical problem of applying economic analysis to designing minerals exploration and data collection strategies for developing countries. Formal decision rules for the design of government exploration and minerals-data-collection programs are derived by using a minerals-industry planning model that has been extended to include an exploration function. Rules derived are applicable to centrally planned minerals industries as well as market-oriented minerals sectors. They pertain to the spatial allocation of exploration effort and to the allocation of activities between government and private concerns for market-oriented economies. Programs characterized by uniform expenditures, uniform information coverage across regions, or uniform-density grid drilling progrmas are shown to be inferior to the strategy derived. Moreover, for market-oriented economies, the economically optimal mix in exploration activities between private and government data collection would require that only private firms assess local sites and that government agencies carry out regional surveys.     

Contrast enhancement of the gastrointestinal tract on MR images using intravenous gadolinium-DTPA

Gadopentetate dimeglumine was administered intravenously to 16 patients undergoing abdominal magnetic resonance (MR) imaging. T1-weighted and fat-suppressed T1-weighted images were acquired before and after intravenous administration of 0.1 mmol/kg gadopentetate dimeglumine. The stomach, small bowel, and colon were analyzed regarding the presence and relative intensity of contrast enhancement. Diffuse enhancement of the gastrointestinal tract wall was observed in all patients following contrast material administration. Such enhancement was most conspicuous on fat-suppressed T1-weighted images. Quantitative measurements indicated that the wall of the gastrointestinal tract enhanced approximately 100% with gadopentetate dimeglumine. This study demonstrates that enhancement of the normal gastrointestinal tract occurs routinely when intravenous gadopentetate dimeglumine is administered, and such enhancement should not be considered indicative of gastrointestinal pathology. Furthermore, it suggests the potential utility for using intravenous rather than orally administered contrast agents to provide enhancement of the gastrointestinal tract on MR images.     

Russian industries at the beginning of 2011: Current issues and investment climate

The results of a regular survey of companies in the real economic sector conducted by the laboratory of analysis and forecasting of microeconomical processes of the Institute of Economic Forecasting, Russian Academy of Sciences, are analyzed and commented.     

Swiss inflation and the two versions of the monetary approaches to the balance of payments

Summary and Conclusion The paper has discussed the distinction between a strong and a weak version of the MBOP first made by Rabin and Yeager. Empirical evidence has been provided to refute the strong version of the MBOP and the closely related global monetarist school of thought contention that the law of one price is the major conduit through which worldwide inflation is transmitted. Switzerland provides a case of a country which imported inflation via both a direct price effect from abroad and continuous balance-of-payments surpluses. The evidence does not explicitly confirm the weak version of the MBOP because it is not a theory of worldwide inflation. The evidence does suggest that there are at least two transmission mechanisms for worldwide inflation. Economists should be careful not to interpret the MBOP as a unicausal theory of world inflation.